I thought it might be useful to have a place where we could all discuss how well the features from Late Night work with the other towns. Then if there are any issues, we'll have a place to keep track of them. Basically, just describe your experiences here.
So far I've tried loading up an old saved game in Twinbrook. I changed the Red Rendezvous to a "dance club" and it seems to work okay. I just changed the bar and the dance floor. A Mixologist automatically showed up, and a couple of paparazzi. The only issue I had is it took a while before the Mixologist started "working." I installed a place to play gigs, but I don't have a band together yet. Btw, it seems like other Sims can join your band even if they have no music skills.
I got invitations from other Sims to go to their parties.
I haven't seen any celebrities yet.
And I was slightly disturbed to discover my old boss had turned into a vampire!